From 21a271e5ba8036653b7cf580383814949890a8df Mon Sep 17 00:00:00 2001
From: Amauri CHAMPEAUX <amauri@champeaux.fr>
Date: Sat, 5 Feb 2022 16:47:19 +0100
Subject: [PATCH] Try to get the locale from the html lang attribute

---
 tarteaucitron.js | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/tarteaucitron.js b/tarteaucitron.js
index 36e59bc..ab511e2 100644
--- a/tarteaucitron.js
+++ b/tarteaucitron.js
@@ -1787,16 +1787,22 @@ var tarteaucitron = {
             }
         }
 
-        if (!navigator) { return 'en'; }
+        // get the html lang
+        if (availableLanguages.indexOf(document.documentElement.getAttribute("lang")) !== -1) {
+            return document.documentElement.getAttribute("lang");
+        }
+
+        if (!navigator) { return defaultLanguage; }
 
         var lang = navigator.language || navigator.browserLanguage ||
                 navigator.systemLanguage || navigator.userLang || null,
             userLanguage = lang ? lang.substr(0, 2) : null;
 
-        if (availableLanguages.indexOf(userLanguage) === -1) {
-            return defaultLanguage;
+        if (availableLanguages.indexOf(userLanguage) !== -1) {
+            return userLanguage;
         }
-        return userLanguage;
+
+        return defaultLanguage;
     },
     "getLocale": function () {
         "use strict";